OSS

OSS may refer to:

Places

O.S.S. (film), a 1946 World War II spy film about Office of Strategic Services agents
The Gang of Oss (film), a 2011 Dutch film set in the city of Oss during the 1930s

Open Source Shakespeare, non-commercial website with texts and statistics on Shakespeare's plays
O.S.S. (TV series), a British spy series which aired in 1957 in the UK and the US
Old Syriac Sinaiticus, a Bible manuscript
Organization of Super Spies, a fictional organization in the Spy Kids franchise

Open Search Server, search engine software
Open Sound System, a standard interface for making and capturing sound in Unix operating systems
Open-source software, software with its source code made freely available
Operations support systems, computers used by telecommunications service providers to administer and maintain network systems

Observatoire du Sahara et du Sahel, dedicated to fighting desertification and drought; based in Tunis, Tunisia
Office for Science and Society, Science Education from Montreal's McGill University
Office of Strategic Services, World War II forerunner of the Central Intelligence Agency
Office of the Supervising Scientist, an Australian Government body under the Supervising Scientist
Offshore Super Series, an offshore powerboat racing organization
Open Spaces Society, a UK registered charity championing public paths and open spaces
Operations Support Squadron, a United States Air Force support squadron

Ohio Sky Survey
Optical SteadyShot, a lens-based image stabilization system by Sony
Optimal Stereo Sound, another name for the Jecklin Disk recording technique
Oriented spindle stop, a type of spindle motion used within some G-code cycles
Ovary Sparing Spay (OSS)
Overspeed Sensor System (OSS), part of the Train Protection & Warning System for railroad trains